Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/226886 
Year of Publication: 
2006
Series/Report no.: 
WIK Diskussionsbeitrag No. 272
Publisher: 
WIK Wissenschaftliches Institut für Infrastruktur und Kommunikationsdienste, Bad Honnef
Subjects: 
Transaktionskosten
E-Mail
Regulierung
Online-Marketing
Zutrittskontrolle
Document Type: 
Working Paper

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